Hot water boiler



1934- c. F. CARMELL HOT WATER BOILER Filed Sept. 17, 1952 INVENTOR L r a d C m "H A k rY 7MB .C.

Patented Dec. 11, 1934 UNITED STATES PATENT OFFICE 1 Claim.

This invention relates to hot water boilers and the object of the invention is to provide a house heating boiler in which the water is contained in an interior tank and about which heat may be applied to boil the water in the tank.

Another object of the invention is to provide a hot water boiler comprising a tank and a hood about the upper end of the tank adapted to trap the heat, the said hood being provided with a flue at a distance below the top of the tank so that only the cooler gases are discharged from the hood.

Another object of the invention is to provide a hot water boiler including a cylindrical portion adapted to confine the heat travel about the water tank and provided with a hood abovethe cylindrical portion adapted to trap the hottest gases about the water tank to obtain the maximum heat therefrom before passing to the flue.

These objects and the several novel features of the invention are hereinafter more fully described and claimed and the preferred form of construction by which these objects are attained is shown in the accompanying drawing in which- Fig. 1 is a section through a hot water boiler embodying my invention.

Fig. 2 is a section taken on line AA of Fig. 1.

Fig. 3 is an elevation of the boiler.

The boiler comprises a base 1 having grates 2 therein of the usual type. A cylindrical jacket 3 is provided which is mounted on the base and is provided with a fire door 4 as shown in Fig. 3. On the interior of this jacket is a bracket 5 and a pair of brackets 6 and 7. An angle iron supporting bracket 8 is provided for each set of brackets 5, 6 and 7 and may be positioned in the brackets 6 and 7 and supported in the bracket at the lower end.

There are three brackets 8 provided, as shown in Figs. 1 and 2, and these three brackets support a water tank 9 centrally of the jacket 3. The water tank 9 extends above the upper end of the jacket 3 and is provided with a pair of discharge pipes 10 at the top and'a pair of inlet pipes 11 at the bottom. This is a double pipe system in which one pipe 10 supplies one series of radiators and the other pipe 10 supplies another series and the pipes 11 provide return pipes for the respective series of radiators. A compartment 12 is formed about the upper end of the jacket 3 by means of the casing 13 and a hood 14 is provided which engages over the upper edge of the casing 13 as shown, the hood and a fire is built on the grates 2.

14 being provided with openings for the pipes 10. Near the bottom of the casing 13 is a flue 15 for carrying off the gases of combustion.

In operation the tank 9 is filled with water The heat passing upwardly from the fire passes around the tank 9 thus providing heat completely about the circumference of the tank and this heat passes upwardly from the jacket 3 into the hood 14 at the top of the tank. This hood traps the hotter gases about the top of the tank allowing the cooler gases to pass downwardly into the chamber 12 and thence outwardly through the flue 15. This arrangement tends to obtain all of the heat possible from the hotter gases and in this boiler heat is provided entirely about the body of waterinstead of only on one side thereof as in the usual sectional type of boiler. In the sectional type of boiler the portion which is similar to the jacket 3 is double walled having water between the Walls and the inner wall is heated while the outer wall remains cool. With my boiler heat is provided entirely about the body of water both at the sides and at the top and bottom and by retarding the hot gases in the hood 14 the maximum amount of heat is obtained from these gases before passing to the flue which occurs as the hot gases cool and move downwardly and are replaced by hotter gases from the fire.

From the foregoing description it becomes evident that the device is very simple and efiieient in operation, will not easily get out of order, maybe readily repaired and provides a device which accomplishes the objects described.

Having thus fully described my invention, its utility and mode of operation, what I claim and desire to secure by Letters Patent of the United States is--' Ina hot water boiler, a base, a cylindrical jacket mounted thereon, a series of lugs extending inwardly from the jacket and arranged in pairs, each pair of lugs being spaced apart and providing a vertical channel therebetween, a horizontal supporting lug extending inwardly from the cylindrical jacket beneath each pair of lugs, a bracket having a flanged vertical edge engaging in the vertical channel between each pair of lugs and seating on the respective supporting lug, each bracket extending radially toward the center of the cylindrical jacket, a cylindrical water tank of smaller diameter than the cylindrical jacket and positioned on the brackets, each bracket being also provided with a lug extending upwardly therefrom to engagement with the edge of the water tank and maintaining the water tank in concentric relation in the cylindrical jacket, the brackets supporting the bottom of the water tank above the bottom of the cylindrical jacket and the water tank extending above the top of the cylindrical jacket, a casing secured to the outer wall of the cylindrical jacket above the brackets and forming an annular chamber about the upper end of the cylindrical jacket and a hood mounted on the upper edge of said annular casing and spaced above the upper edge of the cylindrical jacket and the top of the water tank, the annular casing being provided with a flue in the side adjacent the bottom thereof.

CHARLES F. CARMELL. 

